PEP-257 includes this recommendation:
“The BDFL  recommends inserting a blank line between the last paragraph in a multi-line docstring and its closing quotes, placing the closing quotes on a line by themselves. This way, Emacs' fill-paragraph command can be used on it.”
I believe emacs no longer has this limitation. "If you do fill-paragraph in emacs in Python mode within a docstring, emacs already ignores the closing triple-quote. In fact, the most recent version of emacs supports several different docstring formatting styles and gives you the ability to switch between them.” - quoting Kevin L. Mitchell who is more familiar with emacs than I am.
I’m considering removing that recommendation and updating some of the examples in PEP-257, but I’d like some thoughts from this group before I submit the patch. Any thoughts or references to conversations that may have already been had on this topic?